Usability Quote of the Day

May 23, 2012

There's something very odd going on here. If designers made completely unrealistic assumptions about the physical world when designing technology, then we would blame them (and likely sue them) for technical incompetence. Yet when they make grossly unrealistic assumptions about human nature... we don't blame the designers, we blame the unfortunate people who are just trying to do what the design requires. -- Kim Vicente, The Human Factor, p. 45.    (via interaction-design.org)

Thursday, March 17, 2005

30% of web users have low literacy

"According to Jakob Nielsen 30% of web users have low literacy and the number will probably grow to 40% in the next five years.

Unlike higher-literacy users, lower-literacy users don't scan text. They can't understand a text by glancing at it and must carefully read word for word. Scrolling breaks their visual concentration and they start skipping text as soon as it becomes too dense.
Some recommendations:

- Use text aimed at a 6th grad reading level on important landing pages
- On other pages use an 8th grade reading level
- Place main points at the top of the pages
- Make search tolerant of misspellings
- Simplify navigation
- Streamline the page design
- Avoid text that moves or changes

A study showed that revising the text of a web site for lower-literacy users made it perform significant better for both lower- and higher-literacy users."

Literacy - User Interface Design, Human Computer Interaction (HCI), Ergonomics

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